In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.

Daw`ah has been the foremost responsibility of every prophet. Among the three missions of Rasulullah ﷺ, Da`wah has been enumerated through the recitation of the Qur`an-e-Kareem.[1]
Every Muslim, male and female is tasked with the responsibility of Da`wah.[2] However, while acknowledging the great merits of Da`wah, we should also guard ourselves from all forms of fitnah especially when using modern technology such as the internet etc. for Da`wah. The strong possibility of fitnah through facebook, chat rooms, etc. cannot be ignored. Many sincere people have used these forms for Da`wah but got caught up in some form of illicit and immoral relationship with the opposite gender.[3]
The principle of Shari`ah is that preference must be given to basic responsibilities. A married woman`s basic responsibility is towards her husband and family. In giving Da`wah, it is not permissible for a married person to infringe on the marital rights.[4]
It is therefore best for a woman to consult with her husband[5] before engaging in any Da`wah activity to ensure he is also comfortable and his rights are not compromised.[6]